Baekjoon #2293

import java.io.*;
import java.util.*;

public class Main {
    public static void main(String[] args) throws IOException {
        FastReader br = new FastReader();
        int n = br.nextInt();
        int k = br.nextInt();
        int[] coins = new int[n];
        int[] dp = new int[k + 1];

        for (int i = 0; i < n; i++) {
            coins[i] = br.nextInt();
        }

        dp[0] = 1;

        for (int i = 0; i < n; i++) {
            for (int j = coins[i]; j <= k; j++) {
                dp[j] = dp[j] + dp[j - coins[i]];
            }
        }

        System.out.println(dp[k]);
    }

    static class FastReader {
        BufferedReader br;
        StringTokenizer st;

        public FastReader() {
            br = new BufferedReader(new InputStreamReader(System.in));
        }

        String next() {
            while (st == null || !st.hasMoreElements()) {
                try {
                    st = new StringTokenizer(br.readLine());
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            return st.nextToken();
        }

        int nextInt() {
            return Integer.parseInt(next());
        }

        long nextLong() {
            return Long.parseLong(next());
        }

        double nextDouble() {
            return Double.parseDouble(next());
        }

        String nextLine() {
            String str = "";
            try {
                str = br.readLine();
            } catch (IOException e) {
                e.printStackTrace();
            }
            return str;
        }
    }
}